The cable provider said customers should have access to TV shows and movies from HBO and its sister network Cinemax in the next few months.

"Given the success and popularity of our own Optimum App, we know our customers want the flexibility to watch the programming they receive as part of their cable television service in new ways, on a variety of devices, so we are very pleased to have reached agreement to offer HBO GO and MAX GO to our digital cable customers," John Trierweiler, executive vice president of product management," said in a statement.

HBO GO is accessible online via HBOGo.com and via the Roku set-top box, but subscribers can also watch on mobile devices, including the iPad, iPhone, and Android devices.